Please help me beef up my boy name list!

I am only here for my love of names, and I need help to expand my boy list. I have always had a harder time finding boy names that I love than I have finding girl names. My #1 favorite is Lucian, and I would love to use this one day if I could ever convince my SO! Of the other two names, Gavin is out because a coworker is due with a boy in either June or July (I can't remember) and she is naming him Gavin. Cedric is also out because as much as I love the name (and its connection with HarryPotter) it still always makes me think of Cedric the Entertainer as soon as I hear it.

So, any suggestions for names that are similar in style and might go well with Lucian, provided I use the name and ever have more than one son?

Alternatives for Gavin -Don't cross Gavin off your list until your co-worker truly names gives her son this name. There are countless examples of people thinking their kids going to be _____ and then they meet them and just find it doesn't fit at all.
Suggestions: Gawain, Gustav, Geoffrey, Ervin, Marvin, Calvin, Oliver, and Collin.

I have been thinking about Magnus a lot lately, but I don't think I could picture it on a baby. Roderick makes me think of the TV show The Following, and not in a good way. I have a friend named Geoffrey and another spelled Jeffrey, so I wouldn't use that. And I love Oliver, but could never use it, because it's the name of my dad's pet pig!